v3.25.2
Debt (Tables)
 3 Months Ended
Jun. 30, 2025
Debt Disclosure [Abstract]  
Schedule of Outstanding Debt, Weighted Average Contractual Interest Rates and Range of Contractual Interest Rates
The Company issues debt in various currencies with both floating and fixed interest rates. Outstanding debt net of discounts and fees, weighted average contractual interest rates and range of contractual interest rates were as follows:
 
Weighted average
contractual interest rate (1)
Contractual
interest rate ranges
June 30, 2025March 31, 2025June 30, 2025March 31, 2025June 30, 2025March 31, 2025
 (U.S. dollars in millions)    
Unsecured debt:      
Commercial paper$6,751 $6,022 4.52 %4.36 %
2.87 - 4.82%
2.73 - 4.70%
Related party debt1,000 1,800 4.37 %4.59 %
4.37 - 4.37%
4.59 - 4.60%
Bank loans2,663 2,100 4.34 %4.56 %
3.55 - 5.24%
3.59 - 5.27%
Public MTN program38,010 37,153 3.87 %4.02 %
0.30 - 5.85%
0.30 - 5.85%
Other debt3,301 3,088 3.58 %3.53 %
1.34 - 5.73%
1.34 - 5.73%
Total unsecured debt51,725 50,163 
Secured debt12,700 12,384 4.72 %4.77 %
1.88 - 5.87%
0.88 - 5.87%
Total debt$64,425 $62,547 
_______________________
(1)Weighted average contractual interest rates for commercial paper are bond equivalent yields. Contractual interest rates approximate effective yields. Weighted average contractual interest rate of short-term debt was 4.58% and 4.54% as of June 30, 2025 and March 31, 2025, respectively.